Kuhlmann, M. 2014. Revision of the "euryglossiform" species of the Afrotropical bee genus Scrapter Lepeletier & Serville, 1828 (Hymenoptera: Apoidea: Colletidae). European Journal of Taxonomy. 95 (Sep. 2014). DOI:https://doi.org/10.5852/ejt.2014.95.